Patent US2018885A successfully refreshed from Google Patents.
US2018885A
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Method and apparatus for mixing and discharging the contents of an electric glass furnace
Assignee: Individual
•
Filing: 1934-06-29
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Granted: 1935-10-29
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Expires: 1954-06-29
Abstract
No abstract record available.
Inventors
- 👤 Ferguson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:54
CPC Classifications
C; C03; C03B; C03B7/00; C03B7/08; C03B7/094; C03B7/096; C03B7/098; C03B5/00; C03B5/02; C03B5/027; C03B5/0275; C03B5/16; C03B5/18; C03B5/183; C03B5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |